Led Zeppelin Drops Unreleased 'Black Dog' Take From 'IV' Reissue

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Led Zeppelin poses for a publicity portrait in 1969 in England. (L-R) John Bonham, Robert Plant, Jimmy Page, John Paul Jones.

Led Zeppelin freaks will have a bounty of goodies on their hands when the band re-releases classic albums Led Zeppelin IV and Houses of the Holy on Oct. 28.

But ahead of that release date, fans can get a taste of the rarities that will accompany each album -- for instance, here's an unreleased, alternative take of Led Zeppelin IV opener “Black Dog.”

This freshly unearthed take is rougher than the cut that eventually made the album, which you can hear in the guitar work and in Robert Plant’s vocals.

Led Zeppelin Reissues Set for Splashy Return to Billboard 200 Chart

Both album reissues will include remastered versions of the original albums, along with respective bonus discs of rarities such as this. “Super deluxe editions” will also include an 80-page book and a print of the album cover.

Pre-orders are available on Led Zeppelin’s official website.